US 4,761,973 A · Warp knitting/crochet warp knitting machine

Abstract

The guide bars of a warp knitting/crochet warp knitting as well as the plurality of needles associated with such machines are automatically fully controlled for each full reciprocal movement in the knitting cycle of said machines. The pattern bars, yarn guides and needles are all moved in synchronism with each other and the rotation of the main machine drive to generate various desired patterns through a programmable memory with the capacity to store all the information required to position all the pattern governing parts in a series of juxtapositions which produce the desired patterns in the cloth fabricated by said machine. Said programmable memory means is integrated with a signal processing means generating signals which control the rotation of Servo-Motors; direction of the rotation of said Servo-Motors; rate of rotation of said Servo-Motors; and duration of each said series of rotations. Said Servo-Motors are directly and rotably connected to the pattern bars of said machine in a direct manner in such a way that each said Servo-Motor is directly and integrally connected to its individual pattern bar by means of a screw bolt or a Moglese nut and Acme screw so that the reciprocal movement of the pattern bar is directly controlled by the clockwise or counter-clockwise movement of the Servo-Motor associated with each such pattern bar. The position of each of the elements which must interact in synchronism with each other is determined by an optical sensor integrated into each Servo-Motor. The position of those elements directly controlled by the Servo-Motor is transmitted directly to the controlled elements associated with the programmable memory. The time within which the control element means may operate is determined by feedback from a magnetic switch which is integrally connected to said knitting machine's main rotating shaft.

Claims14

Dependent claims

A fully synchronized individual direct drive apparatus which accomplishes an entirely controlled reciprocal movement cycle for each individual associated pattern bar of a Warp Knitting Machine in accordance with and in conformity with the movement requirements needed for the generation of any specifically desired cloth pattern, said pattern being developed by means of an individual direct drive which couples each controllable mechanical power source to its individually controlled associated pattern bar, said fully synchronized individual direct drive apparatus moving its individual associated pattern bar in controlled scynchronization with all other moving members of said Warp Knitting Machine, including other individually controlled associated pattern bars, said fully synchronized individual direct drive apparatus for each individually controlled associated pattern bar comprising:

a control means comprising a computer which is programmed to prescribe the movements of each individually controlled associated pattern bar, said prescribed movements being accomplished by controlling the rotation of the controllable mechanical power source, where the clockwise and counter-clockwise rotation of the controllable mechanical power source is converted into the reciprocating movements of each said individually controlled associated pattern bar and where the coupling means is accomplished by means of a ball screw and ball nut, said ball screw being mounted on the individually controlled associated pattern bar which is threadably connected to a threaded shaft rotated by the controllable mechanical power source, and where the controlled reciprocal movement cycle as aforesaid is made in controlled synchronization with all other moving members of said warp knitting machine, said synchronization being accomplished through sensors which locate the position of each moving member aforesaid relative to each other by means of said computer whereby the computer is able to effect said synchronization;
a controllable mechanical power source;
and a direct coupling means by which said power source is directly and fully coupled to its individually controlled associated pattern bar during a full reciprocal cycle.

A fully synchronized individual direct drive apparatus which accomplishes an entirely controlled reciprocal movement cycle for each individual associated pattern bar of a Warp Knitting Machine in accordance with and in conformity with the movement requirements needed for the generation of any specifically desired cloth pattern, said pattern being developed by means of an individual direct drive which couples each controllable mechanical power source to its individually controlled associated pattern bar, said fully synchronized individual direct drive apparatus moving its individual associated pattern bar in controlled synchronization with all other moving members of said Warp Knitting Machine, including other individually controlled associated pattern bars, said fully synchronized individual direct drive apparatus for each individually controlled associated pattern bar comprising:

a control means comprising a computer which is programmed to prescribe the movements of each individually controlled associated pattern bar, said prescribed movements being accomplished by controlling the rotation of the controllable mechanical power source, where the clockwise and counter-clockwise rotation of the controllable mechanical power source is converted into the reciprocating movements of each said individually controlled associated pattern bars and where the coupling means is accomplished by means of threadably mounted Moglese threaded Acme nut and head screw, said Acme nut and head screw being mounted on the individually controlled associated pattern bar which is threadably connected to a threaded shaft rotated by the controllable mechanical power source, and where the controlled reciprocal movement cycle as aforesaid is made in controlled synchronization with all other moving members of said Warp Knitting Machine, said synchronization being acomplished through sensors which locate the position of each moving member aforesaid relative to each other by means of said computer whereby the computer is able to effect said synchronization;
a controllable mechanical power source;
and a direct coupling means by which said power source is directly and fully coupled to its individually controlled associated pattern bar during a full reciprocal cycle.

Dependencies are inferred from the claim text.

Warp knitting/crochet warp knitting machine

Life of this patent

Warp knitting/crochet warp knitting machine

Life of this patent

Abstract

Claims14